Shifts from a distant neighboring resonance for a four-level atom
Shifts from a distant neighboring resonance for a four-level atom
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从四能级原子的遥远邻近共振转变
DOI：
10.1103/physreva.84.032508
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发表时间：
2011
影响因子：
2.9
通讯作者：
E. A. Hessels
中科院分区：
文献类型：
--
作者：
M. Horbatsch;E. A. Hessels
在最近的论文[Phys.Rev.A82，052519（2010）]中，导出了由于来自远邻共振的量子力学干涉而引起的共振的系统移位。在这篇论文中，最简单的三能级封闭系统被用来计算的谐振线中心的位移的解析表达式。在这里，我们将分析扩展到更相关的四能级系统，该系统由两个基态和两个激发态组成，并结合了暗态的物理。示出的位移取决于所进行的实验的类型，可以比三能级系统的位移大得多。将所得解析公式应用于氦原子的{sup 23} S-到{sup 23}P跃迁，发现有明显的位移。
In a recent paper [Phys. Rev. A 82, 052519 (2010)], the systematic shifts of a resonance due to quantum-mechanical interference from a distant neighboring resonance were derived. In that paper, the simplest three-level closed system was used to calculate analytic expressions for shifts in the resonant line centers. Here, we extend the analysis to the more relevant four-level system, which consists of two ground states and two excited states and which incorporates the physics of dark states. The shifts are shown to depend on the type of experiment performed and can be much larger than the shifts for the three-level system. The analytic formulas obtained are applied to the {sup 23}S-to-{sup 23}P transitions in atomic helium, where significant shifts are found.